{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.roxby-downs-2018.RD18-181a",
 "station": "RD18-181a",
 "survey": "Roxby Downs Regional MT 2017-18",
 "survey_id": "roxby-downs-2018",
 "country": "Australia",
 "organisation": "Geological Survey of South Australia",
 "location": {
  "lat": -30.675684,
  "lon": 136.852356
 },
 "data": {
  "type": "AMT",
  "n_periods": 96,
  "period_min_s": 9.6e-05,
  "period_max_s": 1171.097318
 },
 "diagnostics": {
  "median_relative_error": 0.006,
  "remote_reference": true,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": 4.9,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
  },
  "classification": "1-D",
  "skew_beta_median_deg": 0.7,
  "pct_periods_3d": 25,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
 "processing": {
  "software": "EPI-KIT",
  "algorithm": null,
  "remote_reference": true,
  "remote_site": null,
  "file_written_by": {
   "name": "EPI-KIT",
   "version": "1.2"
  },
  "note": "MAXINFO=2900\n\n{\n\"Site\": \"181\",\n\"LE\": {\n\"FileName\": \"4572123A\",\n\"StationType\": \"MTU5A\",\n\"Serial\": \"4572\",\n\"ExLength\": 100.0,\n\"EyLength\": 100.0\n},\n\"LH\": {\n\"FileName\": \"4572123A\",\n\"StationType\": \"MTU5A\",\n\"Serial\": \"4572\",\n\"HxId\": \"BMT53812\",\n\"HyId\": \"BMT53697\"\n},\n\"Hz\": {\n\"FileName\": \"4572123A\",\n\"StationType\": \"MTU5A\",\n\"Serial\": \"4572\",\n\"HzId\": \"BMT53702\"\n},\n\"RH\": {\n\"FileName\": \"4573124A\",\n\"StationType\": \"MTU5A\",\n\"Serial\": \"4573\",\n\"HxId\": \"BMT53545\",\n\"HyId\": \"BMT53753\"\n},\n\"Start\": \"2018-01-23T22:32:47Z\",\n\"End\": \"2018-01-24T20:37:40Z\",\n\"Duration\": \"22:04:53\",\n\"ProcessingType\": \"RemoteH1\",\n\"Functions\": \"Impedance, Wiese\",\n\"ProcessingSettings\": {\n\"AntiBias\": true,\n\"ApplyCalibrations\": true,\n\"AutoEdit\": true,\n\"AutoJackKnife\": true,\n\"CoherencyThresholding\": true,\n\"EstimationsPerFrequency\": 10,\n\"Huber\": 10,\n\"InverseWeighting\": true,\n\"RejectRedundant\": true,\n\"RotationAngle\": 0.0,\n\"UseDeclination\": true,\n\"Tompson\": 2\n},\n\"TappingSettings\": [\n{\n\"SampleRate\": 24000.0,\n\"Length\": 512,\n\"Start\": 25,\n\"End\": 230,\n\"Step\": 256,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 24000.0,\n\"Length\": 2048,\n\"Start\": 5,\n\"End\": 150,\n\"Step\": 2048,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 2400.0,\n\"Length\": 1024,\n\"Start\": 8,\n\"End\": 140,\n\"Step\": 1000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 150.0,\n\"Length\": 2048,\n\"Start\": 14,\n\"End\": 400,\n\"Step\": 2000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 150.0,\n\"Length\": 8192,\n\"Start\": 7,\n\"End\": 200,\n\"Step\": 8000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 15.0,\n\"Length\": 16384,\n\"Start\": 4,\n\"End\": 220,\n\"Step\": 5000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 15.0,\n\"Length\": 32768,\n\"Start\": 4,\n\"End\": 200,\n\"Step\": 15000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 15.0,\n\"Length\": 65536,\n\"Start\": 4,\n\"End\": 200,\n\"Step\": 30000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 15.0,\n\"Length\": 131072,\n\"Start\": 3,\n\"End\": 500,\n\"Step\": 50000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n},\n{\n\"SampleRate\": 15.0,\n\"Length\": 262144,\n\"Start\": 3,\n\"End\": 500,\n\"Step\": 100000,\n\"TappingFunction\": \"BLACKMAN_NUTTALL\"\n}\n]\n}"
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/roxby-downs-2018/181.edi"
 },
 "provenance": {
  "pipeline": "ausmt/extract.build_portal",
  "pipeline_version": "0.2.1",
  "extractor": "mt_metadata (community canonical)",
  "software": {
   "python": "3.12.14",
   "mt_metadata": "1.0.10",
   "mth5": "0.6.8"
  },
  "git_commit": "25c90921c42c72bbc5455b4bbdab9137cf8b8e48",
  "parameters": {
   "dimensionality": {
    "beta_per_period_deg": 3.0,
    "skew_3d_deg": 5.0,
    "pct_periods_3d_threshold": 40,
    "ellip_2d_deg": 0.1,
    "min_rez_row_sine": 0.01,
    "beta_physical_cap_deg": 15.0,
    "min_usable_period_frac": 0.5,
    "skew_aggregation": "median"
   },
   "diagnostic": "completeness/smoothness (median rel error + coverage + smoothness)"
  },
  "generated": "2026-09-09T06:22:47.791693+00:00",
  "input_file": "181.edi",
  "input_sha256": "4aebaf4aea906f2ec9493edfa61c730b71e973252001675700e2d849cf8f06b6",
  "source": {
   "original_filename": "181.edi",
   "source_record_id": "Zonge_full_EDIs/181.edi"
  },
  "section_selected": {
   "sectid": "181_avg",
   "sections_dropped": 10
  }
 },
 "coordinate_qc": null,
 "canonical_conditioning": [
  "survey.id->roxby-downs-2018",
  "station.id->RD18181a",
  "station.source_id_preserved_in_site_name:RD18-181a",
  "station.source_file_preserved_in_site_name:181.edi",
  "sign_convention: '+' is a library default — EDI carries no machine-readable sign convention; NOT asserted by source",
  "declination.epoch/model: library defaults (epoch=None, model=IGRF) — an EDI states only the declination value; epoch/model NOT asserted by source",
  "citation.authors<-survey_meta:Geological Survey of South Australia",
  "citation.title<-survey_meta",
  "copyright.release_status=Data Citation Required; conditions_of_use set from licence CC-BY-4.0 (replaced mt_metadata default boilerplate)"
 ],
 "frame": {
  "evidence": {
   "branch": "mt",
   "zrot": "0",
   "trot": "0",
   "rotspec": null,
   "hmeas_azimuths": {
    "hx": 0.0,
    "hy": 90.0
   },
   "emeas_azimuths": {
    "ex": null,
    "ey": null
   }
  },
  "impedance_rotation_deg_source": null,
  "tipper_rotation_deg_source": null,
  "derotated": false,
  "frame_served": "declared-zero",
  "declared_azimuth_deg": 0.0,
  "convention_check": {
   "verdict": "ok",
   "phs_xy_median_deg": 28.75,
   "phs_yx_median_deg": -146.25,
   "n_periods_used": 96,
   "detail": null
  },
  "survey_frame_note": "frame: mixed declared frames across stations: 0°…7° — each station is served in its own declared acquisition frame; this survey does not share one frame (nothing de-rotated)"
 },
 "runs": [
  {
   "id": "RD18-181a-r01",
   "time_period": {
    "start": "2018-01-23T22:32:47Z",
    "end": "2018-01-24T20:37:40Z"
   },
   "sample_rate_hz": 24000.0,
   "data_logger": {
    "model": "MTU5A",
    "serial_number": "4572"
   },
   "channels": [
    {
     "component": "ex",
     "dipole_length_m": 100.0
    },
    {
     "component": "ey",
     "dipole_length_m": 100.0
    },
    {
     "component": "hx",
     "sensor": {
      "serial_number": "BMT53812"
     }
    },
    {
     "component": "hy",
     "sensor": {
      "serial_number": "BMT53697"
     }
    },
    {
     "component": "hz",
     "sensor": {
      "serial_number": "BMT53702"
     }
    }
   ]
  }
 ],
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/roxby-downs-2018/181.edi"
  },
  {
   "id": "emtfxml",
   "kind": "transfer_function",
   "format": "emtfxml",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "xml/roxby-downs-2018/RD18-181a.xml"
  },
  {
   "id": "mth5",
   "kind": "transfer_function",
   "format": "mth5",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "h5/roxby-downs-2018/RD18-181a.h5"
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/roxby-downs-2018-edi.zip"
  },
  {
   "id": "xml-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/roxby-downs-2018-xml.zip"
  },
  {
   "id": "survey-mth5",
   "kind": "archive",
   "format": "mth5",
   "path": "bundles/roxby-downs-2018-tf.h5"
  }
 ]
}